ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 62, (3) 240 - 247 (2018)


MODELING IN-PHASE THERMOMECHANICAL FATIGUE HYSTERESIS LOOPS OF FIBER-REINFORCED CERAMIC-MATRIX COMPOSITES
 
Li Longbiao
 
College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, No.29 Yudao St., Nanjing 210016, PR China

Keywords: Ceramic-matrix composites (CMCs), Thermomechanical fatigue, Hysteresis loops, Interface shear stress
 

In this paper, the in-phase thermomechanical fatigue hysteresis loops of fiber-reinforced ceramic-matrix composites (CMCs) have been investigated. The relationships between the thermal cyclic temperatures, fiber/matrix interface shear stress, fiber/matrix interface debonding/sliding and the stress/strain hysteresis loops have been established. The effects of fiber volume fraction, fatigue peak stress, matrix cracking space, fiber/matrix interface debonded energy and thermal cyclic temperature range on the in-phase thermomechanical fatigue hysteresis loops have been analyzed. The in-phase thermomechanical fatigue hysteresis loops of cross-ply SiC/MAS composite have been predicted for different applied cycle number.


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doi: 10.13168/cs.2018.0017
 
 
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